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Finding the Fourth Proportional to 216,219.80, 324,329.70 and 156,776.60

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Solution

The fourth proportional to 216,219.80, 324,329.70 and 156,776.60 is: 235,164.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,219.80 : 324,329.70 = 156,776.60 : x
  2. Step 2: Convert to fraction form
    216,219.80/324,329.70 = 156,776.60/x
  3. Step 3: Cross multiply
    216,219.80x = 324,329.70 × 156,776.60
  4. Step 4: Simplify right side
    216,219.80x = 50,847,307,645.02
  5. Step 5: Solve for x
    x = 50,847,307,645.02/216,219.80
  6. Step 6: Final answer
    x = 235,164.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.